1.4.1

Goat Horns can be configured as a whistle! Each horn can be set individually with differing settings:
Whistle only, Unwhistle only, Toggle (which alternates between whistling and unwhistling) and Whistle / Sneak Unwhistle (which whistles while standing and unwhistles while sneaking)
Vanilla clients can use the /indypets horns <horn_type> <setting> command to configure each horn
/indypets horn by itself prints all current horn settings
don't send player config to vanilla servers
delay saving of server config to server shutdown

1.4.0

This is a large update to the mod, please make sure to read!

Pets are not independent by default anymore and the relevant config options have been removed!
This is to be more inline with how vanilla works, especially with the next point:
A pet's state is changed just like sitting is changed, i.e. Right Click will cycle between sitting, following and independent.
(Shift + Right click and whistling will still toggle following and independent directly, just like before.)
There's new options to completely turn off the Right Click or Shift + Right Click interactions if wanted
(So you could use only Right Click, or only Shift + Right Click, or only IndyPets' Interact hotkey)
Status messages for single pet interactions will now show above the hotbar instead of inside the chat
Status messages now also say if the pet is sitting (" (but sits)")
Vanilla clients can use the new /indypets config command, allowing to view (get), change (set), and get descriptions for (help) the (limited amount of) options.
These settings are stored server-side.
Some inconsistent interactions, e.g. relating to the blocklist, have been fixed.
The project's code is now licensed under MIT (previously CC0). No change for assets (CC0).